Home / 7,212.74-9,953.56-4,068.90

Finding the Fourth Proportional to 7,212.74, 9,953.56 and 4,068.90

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Solution

The fourth proportional to 7,212.74, 9,953.56 and 4,068.90 is: 5,615.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,212.74 : 9,953.56 = 4,068.90 : x
  2. Step 2: Convert to fraction form
    7,212.74/9,953.56 = 4,068.90/x
  3. Step 3: Cross multiply
    7,212.74x = 9,953.56 × 4,068.90
  4. Step 4: Simplify right side
    7,212.74x = 40,500,040.28
  5. Step 5: Solve for x
    x = 40,500,040.28/7,212.74
  6. Step 6: Final answer
    x = 5,615.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.